No module named 'PyQt5.QtWebKitWidgets'

I'm getting this error when running python pylote.pyw:

TESTS:  False | PYQT:  PYQT5
Traceback (most recent call last):
  File "/home/USER/General/Tools/pylote package/pylote/libs/utils_webengine.py", line 47, in <module>
    from PyQt5.QtWebEngineWidgets import QWebEngineView
ImportError: /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2: undefined symbol: krb5_ser_context_init, version krb5_3_MIT

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "pylote.pyw", line 61, in <module>
    import main
  File "/home/USER/General/Tools/pylote package/pylote/libs/main.py", line 35, in <module>
    import utils, utils_functions, utils_webengine, utils_filesdirs
  File "/home/USER/General/Tools/pylote package/pylote/libs/utils_webengine.py", line 51, in <module>
    from PyQt5.QtWebKitWidgets import QWebView as QWebEngineView
ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

I've executed sudo apt install python3-pyqt5 python3-pyqt5.qtwebengine python3-pyqt5.qtsvg

My environment:

Python 3.8.8

Linux Mint 20.1 (based on Ubuntu 20.04)